六年级数学简便算法大全

知识改变命运简便算法分类试题一、常见分数、小数和百分数的互化。1 =0.5=50%1 =0.25=25%3 =0.75=75%1 =0.2=20%24452=0.4=40%3=0.6=60%4=0.8